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Some observations fighting IAT's with JLT CAI

BlownGP

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rex979

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This is one of the reasons why I decided to go with the Holley Intech system instead. It's a true cold air intake system. Also their dyno claims are impressive but I have not personally validated them. From reading other Forums and other articles posted it would seem Holly's claims are pretty close.
 

BlownGP

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This is one of the reasons why I decided to go with the Holley Intech system instead. It's a true cold air intake system. Also their dyno claims are impressive but I have not personally validated them. From reading other Forums and other articles posted it would seem Holly's claims are pretty close.
That's a weird looking intake, but I can see how it would keep the IATs down.
 

Zinc03svt

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I hit 138 iats today stock box. Heat index 105 sitting in line for 15 minutes in Wendy’s drive-thru. Two blips down the road back down to 109. On E85 there is zero heat soak nor timing pull. Next...
 

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BlownGP

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I hit 138 iats today stock box. Heat index 105 sitting in line for 15 minutes in Wendy’s drive-thru. Two blips down the road back down to 109. On E85 there is zero heat soak nor timing pull. Next...
Heat index is what it feels like not what the actual temperature is
But I assume with that heat index, the ambient temp was around 95 because that's what it was here today with similar heat index.
So was 109 IATS is about average.
 

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I won't get as close with the IAT's as you N/A guys, my IAT is measured post supercharger (IAT2). So I made a lid for my JLT and did
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some other things. Every little bit helps.
 

Zinc03svt

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Heat index is what it feels like not what the actual temperature is
But I assume with that heat index, the ambient temp was around 95 because that's what it was here today with similar heat index.
So was 109 IATS is about average.
Yeah around 95 and humid. Had a/c running whole time. I had never seen much past 125 before sitting for long periods of time. Again, the E85 and once moving a tad it is not an issue. CHT’s were 199-204.
 

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I've been pretty satisfied with my CP-E Icebox so far. IAT's are at the stock level with a tune required intake, dry flow filter. It's getting to be 100 degrees here in Texas and my IAT's are about 3-4 above ambient when I'm really moving and sit about 8-10 degrees above in city driving. I've gotten up to about 120-125ish while idling for a while, but like everyone else has said before, it recovers quick after you're moving. It's just good to have that extra insulation so you don't hit those 140+ degree temps from idling too long with an open intake during the summer. Even then, your car will still be fine. It takes a while to hit those temps without FI.
 

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All JLT intakes require a tune so it's not possible. You'd have to tune for both then compare. The main difference you'll see is more power in the upper rpms over the stock intake. It's not a lot though. There is a pretty big difference with forced induction though.
Actually you could simply throw in the MAF curve for the JLT, leave all other parameters the same then dyno. It can be done, reason it hasn't.... likely results wouldn't sell 350.00 intakes.
 

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AceOne

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Modified the 2015 GT Airaid kit to work with the CJ manifold and FRPP Maf tube...dropped idling ait by 40*
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AZ18yote

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Yeah around 95 and humid. Had a/c running whole time. I had never seen much past 125 before sitting for long periods of time. Again, the E85 and once moving a tad it is not an issue. CHT’s were 199-204.
Was 115 here in Phx the other day. Stock box IATS around 121 sitting at red lights and in traffic. "Cools" right off when moving. CHT in that similar 196-204 range. That's just on flex fuel not even full e85 (damn AZ). E + stock box is a winning combo in hot conditions imo.
 

Burkey

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Does the JLT even give you more hp than the stock intake? The stock design looks pretty damn good.

Anyway, rule of thumb is the factory intakes on cars are true cold air units that are sealed off from the engine bay, so even if the JLT has a larger filter area, in summer weather you are almost always better off with a OEM system. In the winter the JLT may have an advantage.

Otherwise, just run 250cc/min of water injection with an AEM kit. Then it doesn't matter how much your intake kit heatsoaks. The water will cool down the intake charge before it enters the motor. It's common in the turbo world since turbos compress the intake charge and that function naturally heats up the air to an insane amount.
Water/meth won’t alter the way the ECU perceives IAT on a NA car.
The MAF sensor is upstream of the spray, ergo, the IAT reading will remain the same.
You might see some extra spark though if you get an octane bump.
 

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This helped me a lot.
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Good work, but you’d be surprised how much air-gap there is in the bit you missed.
See pic for how to rectify if you’re interested.
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Was 115 here in Phx the other day. Stock box IATS around 121 sitting at red lights and in traffic. "Cools" right off when moving. CHT in that similar 196-204 range. That's just on flex fuel not even full e85 (damn AZ). E + stock box is a winning combo in hot conditions imo.
You should try the Reische 170 thermostat if you haven't already. The fan profile can be set around it. Lund actually preferred it when I got my first tune a long time ago.
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